Litter Sifting Liners are the easy way to keep your litter box neat and tidy. Sifting Liners trap the dirty litter, allowing only clean litter to sift through. Litter Sifting Liners extend the life of your litter by up to 50% and keep the litter box cleaner. Theyfre more sanitary for you and your cat, and eliminate the back pain from bending to scoop. Fits most regular and hooded litter pans, and works with clumping litters. Includes 28 sifting liners and 2 solid liners, a full month's supply! Dimensions: 36" x 40"